Couch roll



T. A. CUISH, JR.

COUCH ROLL.

Aww/:mom FILED lum-:24, 1920.

194228,76@ Patented Sept. 1129 1922.,

v :Lg 5

Patented Sept. l2, i922. p

MMWR@ SEEES TRUE/IAN ALONZO CUISH, JR.,

COUCH. ROLL.

Application led .Tune 24,

To all whom t may concern:

Be it known that l, TRUMAN ALONZO Corsia, Jr., a citizen of the UnitedStates, residing at Green Bay, in the county of Brown and State ofWisconsin, have invented certain new and useful improvements in CouchRolls; and l do declare the following to be a "full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

rl`his invention relates to an improved couch roll for use on papermaking machines,

An object of the invention is to provide a couch roll which is such thatit may be adjusted in such a manner as to cause the elastic coveringwith which it is equipped to `it snugly thereon.

Another object vide a new kind of cover for a couch roll, it being suchthat it will create a vacuum and assist in pulling the sheets of paperpulp from the usual wire or cylinder onto the endless felt, and willalso, during its operation Asuck or draw a quantity of moisture out ofthe pulp and help thelatter to dry more rapidly.

Other objects and advantages of the invention will be apparent. duringthe course of the following description.

'bili vwhich insures that covers ln the accompanying drawings forming apart of this specification and in which like numerals are employed todesignate like parts throughout the same:

Fig. 1 is a sectional view, partly in elevation, of a couch rollconstructed in accordance with my inventlon,

Fig. 2 is a vertical sectional view taken on the line 2--2 of Fig. 1,looking in the direction of the arrows.

lFig. 3 is an enlarged sectional view'of my improved cover for couchrolls, the section being taken on the line 3-3 of Fig. 4e.

Fig. 4c is a top plan view of a portion o said cover.

ln carrying out my invention l employ a tubular 'elastic covering whichis slipped endwise onto an expansible core, the latter havingconsiderable range of adjustment of various sizes will fit snuglythereon.

Referring to the drawings, wherein a preferred embodiment of myinvention is shown, the numeral 1 designates a rotary shaft on which aspider 2 is xed. The exrim-like member 5.

of the invention is to pro-` Serial No. 391,308.

tremities 3 of the arms of the latter are apertured to form bearings forthe radial axles 4 which are rotatable therein. rlhese axles arescrew-threaded on their outer ends and have screw threaded engagementwith the screw threaded openings in the metallic On their inner endseach axle carries a small bevel gear 6 which meshes with' the beveledgear teeth of the combined spur and bevel gear member 7. A. pinion 8 onthe shaft 9 meshes with the spur teeth of the combined gear 7 rlfhelatter is held against displacement by the collar 10. l desire tomention here that where l use singular wording and there is more thanone like part shown, l intend the wording, whether singular or plural,to designate all like parts. With the foregoing'construetion it will beseen that when the shaft 9 is rotated, the rim members 5 will be movedtoward or from the axle 1, according to the direction in which the shaft9 is rotated. To form the wall of the drum, l make use of wooden slats11 which are longitudinally arranged and are secured to the rim members5 by means of bolts 12. ln use there will, of course, be more lthan oneof the spiders and other parts associated therewith, the number employedbein governed according to the length of the rol used. rliheconstruction -so far set forth forms an open ended cylindrical,expansible core or drum which is made up of a pluralityof readilydisconnectable sections.

A drum of the above described character isespecially adapted for usewith an elastic covering of any suitable construction, whether equippedwith a lain surface or a suction creating surface, a though the latterhas been shown. ll designate this cover by the numeral 13, it beingcylindrical, and preferably made of rubber or some other equivalentmaterial. As before stated this cover is of tubular formation and isslipped f endwise onto the above described, or any other similar type ofdrum. ln case the cover does not fit as snugly on the drum as it should,it may be made to fit properly by expanding the drum in the manneralready described. lt is'to be noted that the cover is of a lengthlonger than that of the drum.

lt is the purpose of this construction to permit the ends of the coverto extend beyond and be brought down over the ends of the drum and intoclose proximity tothe shaft,

at which point they are clamped tightly betweenthe collar 14 and nut 15.This is a novel and convenient way of fastening the cover in position.Attention, is directed at this point, to the fact that the cover bylpreference, has a multiplicity of closely spaced, recessed bosses formedon one side thereof and these function as suction cups 16. VEmphasis isto be laid on this feature of construction because of the fact that thesuction cups, when the drum is in rotation, create a strong vacuum whichhel s greatly in pulling. the sheets of paper pu p off of the usual wireor c linder, onto the endless felt, Also, due to t e strong suctioncreated, a great quantity of the moisture is extracted from the paperpulp and' felt, thus helping the pul to dry more rapidly than it usualldoes. llt is also to be stated that my couc roll covering will add tothe life of the felt, wires, and cylinders. It is desirable to increasethe life of the cover itself, so I embed sheets of fabric 17 in thecover as shown more clearly in Fig. 3. Thus, the cover is reinforced andwill last indefinitely.

Whilev I have described and shown the cover as being provided withsuction cups formed by recessed bosses, I do not desire to limit myselfto this particular construction.

The manner in which my couch roll op'- erates is well known by personsskilled in the art to which this invention relates, so, it is notthought that a description thereof is necessary. On the other hand, theemployment of a cylindrical elastic coveringl fitted on an expansibledrum seems to be new. In view of this, I will review briely,.the mannerof using my couch roll. T'o this end the cover is slipped endwise overthe drum and f the ends thereof brought overthe open ends of the drumand clamped between the collars 14 and nuts 15. In all probability thecover will not fit as snugly as desired, so by utilizing proper means,the shaft 9 maybe rotated in a direction to expand the sectional wall ofthe drum until the cover fits sufficiently tight and insures effectiveoperation of my roll. It is obvious that by rotating the shaft in onedirection, the wall of the 'drum will be expanded, and by rotating itthe felt and at the same time sucks moisture from the pulp and felt.

A careful consideration of the foregoing description taken inconjunction with the accompanying drawings will enable persons skilledin the art to which this invention appertains 'to obtain a thoroughunderstanding of the same, therefore further description is deemedunnecessary.

It is to be understood that the worm of my invention herein ,shown'anddescribed is to be taken as a preferred embodiment of the same, and thatvarious changes in the shape, size, and arrangement of parts may beresorted to without departing from the spirit of the invention or thescope of the subjoined claims.

I claim:

1. In a couch roll, a shaft, an expansible drum mounted on the shaft, anelastic cover for the drum, the ends of thel cover being bro ht over theends of the drum into close proxlmity to said shaft, and means forsecuring the ends of the cover around the shaft.

2. In a couch roll, `a shaft, an expansible drum mounted on the shaftfor rotation therewith, collars'fixed on the shaft adjacent the ends ofthe drum, an elastic covering on the drum, the ends thereof beingbrought down over the ends of the drum and into' close proximity to theshaft, and a nut -on the shaft clamping the covering'against thecollars.

3. A couch roll having a covering comprising an elastic body rovided onits outer surface with a plurality of suction cups which create'a vacuumand assist in pulling the paper pulp sheets from the usual wire onto thefelt and also suck moisture from the pulp.

4. A couch roll covering comprising a sheet of iiexible materialprovided on one side with a multiplicity of suction cups in! tended tocreate a vacuum and assist in pulling the paper pulp sheets off' of theusual wire onto the felt and at the same time suck moisture from thepulp.

5. A couch roll comprising a sheet of elastic material having amultiplicity of closely spaced bosses on one side thereof, each bosshaving a cavity formed therein thus permitting them `to function assuction cups which are intended to create a vacuum and assist in pullingthe paper pulp sheets olf of the usual wire onto the felt and at thesame time suck moisture from the pulp.

In testimony whereof I have hereunto 'set my lla/nd'.

'IRUMAN ALONZO CUISH, JR.

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